-LRB- CNN -RRB- -- An American woman died aboard a cruise ship that docked at Rio de Janeiro on Tuesday , the same ship on which 86 passengers previously fell ill , according to the state-run Brazilian news agency , Agencia Brasil .

The American tourist died aboard the MS Veendam , owned by cruise operator Holland America . Federal Police told Agencia Brasil that forensic doctors were investigating her death .

The ship 's doctors told police that the woman was elderly and suffered from diabetes and hypertension , according the agency .

The other passengers came down with diarrhea prior to her death during an earlier part of the trip , the ship 's doctors said .

The Veendam left New York 36 days ago for a South America tour .

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The elderly woman suffered from diabetes and hypertension , ship 's doctors say

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Previously , 86 passengers had fallen ill on the ship , Agencia Brasil says